Improving the compositional approach for processing calibration results

The paper describes the problems that arise during the calibration of measuring instruments and are related to the mathematical processing of the measurement protocol, in particular, the use of a compositional approach to evaluating the accuracy of calibration results. The paper presents methodological features and an effective technology for the mathematical processing of the calibration protocol in accordance with the current regulatory documents R 50.2.004-2000 “GSI. Determination of the characteristics of mathematical models of dependencies between physical quantities in solving measurement problems. Basic principles”, MI 1317-2004 “GSI. Results and characteristics of measurement errors. Forms of presentation. Methods of use in testing product samples and monitoring their parameters” and MI 2916-2005 “GSI. Identifi cation of probability distributions in solving measurement problems” using specialized and diverse non- specialized software. In order to improve the compositional approach, the MMI-Calibration 3.0 software has been developed. The MMI-Calibration 3.0 software takes into account the errors that arise due to the inadequacy of the calibration function, and it also generates a calibration chart that takes into account the tolerance intervals for a given confidence level for the most time-consuming part of calibration, which is the statistical processing of the measurement protocol. Within the framework of the MMI-calibration 3.0 program, it is possible to apply a generalized solution to the calibration problem, based on a compositional approach, which allows to speed up and simplify the computational part of the problem. The results obtained will be useful, for example, for specialists of calibration (verification) laboratories.

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